Leather-board machine.



R. A. LANCEY.

. LEATHER Boum MAGHINB.

APILICATION FILED JARS* 1911. Y l 1,016,945. Patented Feb. 13,1912.

4 SHEETS-SHEET 1.

R. A. LANGBY.

LEATHER EGARD MACHINE.

APBLIUATxoN FILED mme. 1911.

1,616,945, i Panam-ed Feb. 13, 1912.Y

i SHBETB-BHEBT'S. Y

@Inf/6695 i M @n/ff i 5W/fw @fw y R. A. LANCEY.

.LEATHER BOARD MACHINE.

APPLIGATIQN PILED uma. 1911 Patented Feb. 13, 1912.

4 snBnTs-sanm a." A

@Mesem 1),! Qn. m.. O Aw G R. A. LANCEY. LEATHER 13mm) MAGBINVE..PrLIoATIox FILED-rml 1911.

Patented Feb. 13,1912.

4 SHEETS-SHEET 4.V y 131' .6

sever the stock after it has collected for automatically UNITED STATESPATENT OFFICE. t

MARION L. SPAULDING, OF

nosToN, MASSAGE usarse, cornmnnns nolnolnnsr- Ness UNDER; 'ri-1Erima-NAME am) STYLE orv J'. sraummo a sons comrsNY,

0F ROCHESTER, NEW i HAMPSHIRE.

LEATHER-BQABD MACHINE.

Specification of Letters Patent.

Application led January 6, 1911. Serial No. 601,193.

To all whom -it may concern:

Be it known that I, RoswELL A. Lancer, a citizen of the United Stateszresiding at Townsend, in the county of Middlesex and State ofMassachusetts, have invented certain new and useful Improvements inLeather-Board Machines; and I do hereby declare the followin to be afull, clear, and exact description o the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

The invention relates to leatherboard ma chines and more particularly tomechanism severing and removing the sheet of stock from the collectingroll after a predetermined thickness of stock has been collected uponthe roll.

he ob'ect of the invention is to provide novel an improved mechanism'which will operate in a reliable and uniform manner to ipon the roll toa predetermined thickness and to strip the severed stock fromthe rollwithout' injury thereto.

To these ends the invention consists in the features and combinations ofarts hereinafter described and referred'to 1n the claims, the advanta sof which w`l be obvious to those -slslle in the art fro the .followingdescription of the machine embodying the invention.

The various features of tne invention will be readily understood from anins eclfion of. the accompanying drawings and t e following descriptionof the construction illustrated therein.

In the drawin Eigarel'is a rear elevation of a leathersoard machine,showing the preferred form of thereto. Fig. 2 looking toward. therightin Fig. 1. Fig. 3 is a vertical sectional view showin theconstruction of the stripper'plpbe. Big. 4 a vertical sectional view online 4 4; Fig. 1.

the maention applied Fig. y5 is a lrtiallou "tudinall section throughtheleetiigol Fig. 6 is a cletailed lan `view nf the mechanism for actuis' apartij.; side elevation Y y through the hollow journal i'lected upoxhthethe drawings is provided with the usual felt roll 1 about whlch thestock carryingV felt band 2 travels and is also provided withl acollecting roll `orc'ylindel- 3vwhich rests upon the felt roll 1 and isdriven by frictional engagement therewith, The collecting roll isournaled \in bearings formed in bearing locks 4 which are mounted toslide vertically on the ways 5 in the usual manner. The pulp stockcarried by the felt 2 collects upon the roll 3 and successive layers ofthe vstock are Wound upon the roll until Ya evlnder of the desiredthickness is forme thereon. During the collection of the stock upon thecollectlng roll, the roll gradually rises, the bearings 4 sliding freelyon vthe ways 5 as the thickness of the stock increases. As thus fardescribed, the machine is of the usual construction and operates in theusual manner.

In accordance with the present invention the stock collected upon thecollecting roll is severed by a knife mounted within the roll which isautomatically actuated'when a predetermined thickness ot stock hascollected on the roll and the severed sheet of stocklis stripped fromthe roll by tion at the proper time. M l* In thenconstruction shown inthe dna'wings the knife blade 6 is secured upon a knife bar 7 which ismounted to move radially of the collecting roll. The knife bar isrovided with ribs 8 which are Iitted to side within guideways 9 formedina supporting plate 10 which 1s secured within the collecting roll. Theblade 6 normall the periphery ofthe roll and is through 'a narrow slotin the'perip series of togles 11 connected to an actuatin bar 12. T ebar 12 is connected by means lo.

a link 13 with a. rod 14 which extends of the roll and with the lowerrojected ery by a is connected at its outer end end of a lever 15. Thelever'.V ,is Iactuated at the proper time' to project an Yretract theknife any friggin.v 'Y controlled `thickness of the stoel: clcollectingroll. The supporting plate 101s secured to the collecting roll by meansof Sf'rv\\- ll which project a stripper plate` which is automaticallythrown into opera- Patented4 Feb. 1.3. 1912.

Cit

y lies within inwardly through counter-sunk holes in pro pectxngshoulders 102 formed integrally on each end of the plate 10 and arethreaded etlOS in the rol 3, asis clearly shown in Fig. 5. The supportinlate, the knife blade, the knife bar an tlic knife; bar aotuatingmechanism which is mounted on the supporting plate can be removed as anentirety by loosening the screws. 101 and draw ing the plate 10 outthrough the longitudinal opening 104 (Fig. 4) in the roll 3. 'The 'knifeand the mechanism for operatin it, which is supported by the plate 10within the opening 104 can thus be readily inserted and removed throughsaid opening. The outer face of the plate 10 isv a. partially cylindrical surface of the 'seme curvature as the roll 3 so that when theplate 10 is in place within the openin 104, it completes the peripheralsurface o the roll 3 over the opening 104, leaving but a narrow slot atits side for the knife blade 6.

The mechanism for actuating the stock severing knife comprises u cam 16arranged to engage a roll carried by the upper end of the lever 15. Thecam is 'formed on e sleeve 17 `'which is mounted in a bearing 1S andloosely surrounds a -continuously rotat ing shaft 19. The inner end ofthe sleeve 17 is provided with one member 20 of n clutch, the othermember 21 of which is formed on al sleeve 22 which is lwyed.l to turnwith a. slide on the shaft 19. The clutch members 20 and 21 are normallydisengaged so that the cam 16 remains stationary in position to hold thestock severingbladc re tracted within the periphery of t e collect ingroll. When the stock is collected upon the collecting roll to apredetermined th1ckness, the -clutch members are engaged and the cam 16is given a. single revolution to advance and retract the knife 6, andthen the clutch members are again disen ged and the mechanism whichcontrols their engagement is reset.

l'n order that the mechanism for actuating the knife may be properlytimed with relittion to the rotation of thc frictionally drivencollectingr roll, the the collecting roll. The mechanism for thusdriving the roll in the construction shown comprises e sprocket chain 23assing over a sprocket Wheel on the end of t c collecting roll shaft andover a sprocket wheel 24 which is connected with the shaft 19 throughbevel gears 25. y The sprocket wheels and gears arc so proportioned thatthe shaft 19 makes one revolution for cach revolution f the collectingroll. V

The mechanism for controlling the engagement and disengagement of theclutch mombers 20 and 21 comprises s. lcvcr 26, the np- Vper end ofwhich isprovidcrl with n yoke embracing the clutch member E21 andonrrysetting slide in its retracted shaft 19 is driven from clutchmember. The lower end of the lever is connected with a spring 28 whichtends to force the clutch members into engagement. The clutch sleeve 2Qis held in retracted position against the tension of the spring 2S le?ve latch 29 andresetting slide 30. The lute bar 29 engagts n. finger 31connected to the rear side of 'e resetting slide. A pin 32 on the upperend of the lever 26 engages a. lug Blfldprojecting from the front sideof' the s i e. l When the latch bar '29 is raised the resetting slide 8Ole released so that'the slide and the clutch sleeve 22 are free to movetoward the right n Figf under the influence of the spring 28. W n thisoccnrs,`therefore, the c utch members are engaged and the knifeactuating cam is rotated. When the latch bar 29 is raised to release theclutch sleeve 22 a supplemental latch 34 (Fig. 8) is pressed up againstthe underside or the nger 31 by the spring 35, the latch 34 being soarranged that it projects slightly Abeyond the engaging face of thelatch bnr Q9. As the resetting slide 30 movestoward the right in Fig. Gand left in Fig; S,A the finger 31 slides freely over the upper end ofthe latch 84.` During the first half of the revolution of the cam sleeve17, the resetting slide 30 is moved toward the left in Fig. 6 by a com36 secured to the sleeve. This movement of the slide carries the end ofthe finger 31 to the right of the latch A34 in Fig. 8, so that the latchrises into position to retain the re- Y osition. At this time the latchbar 29 is stil in its raised osition. As the revolution ofthe com sleeveand' shaft 19 is completed, a cam 37 on the clutch sleeve Q2 engages a.pin 38 on the slide 30 and, the pin 38 being held fast retracts theclutch sleeve thus disengaging the clutch member and stopping therotation of the knife nctuating cam. A safety 'stop bnr 39 actuated bythe lever 26 may be arranged to engage a rib 4() on the back of the camdisk 18 to revcnt the running forward of the cam a ter the clutch hnsbeen disengaged or to arrest the rotation of the com in ense the clutchmembers should not be disengaged for any reason.. After tbc resettingslide has been retracted und hitched in position by the latch 3l, andthc clutch members have been disengaged, down into position in front ofthe lingcrl pushing;r the hitch 34 down below the finger 3l, asindicated in Fig. S. The resetting the hitch bar 20 moves slide thenmoves forward slightlyto bring the number of revolutions oi thecollectingV ing pins 2T for engaging the rear side of the roll required,the latch bar 29 is'so connected the colleetin v the knife 6, the

' block the axis of the collecting riphery of the abutment roll isconcave lon- ,the ends of the with the collecting, roll thatfi'tisoperated b the upward movement yot' the roll. In t. e construction shownthe devices connecting the latch and collecting roll comprises bur 41,the ends of which ure supported upon rods 42 rising from the bearingblocksy of the collecting roll. This bur carries ou ruljusteble screw42, the upper end of which 1s arranged to engage e lever 43. The leveris iivoted at one end to n fixed bracket 4l an is connected at the otherend to the latch bar 29 by a link 45. The'verticnl posit-ion of thecollecting roll and of the ber 41 de ponds upon the thickness of thestock colected upon the roll and by adjusting the screw 42, theconnections between the roll and latch 29 may be adjusted to throw theknife operating mechanism into o eration when any desired thickness ofstock lios been collected upon the collecting roll. When the stock hasbeen severed by the knife and removed from the roll, the roll returnsinto engegemeutwith the felt roll 1, allowing the latch 2oreturn intoactive position and the I' ating mechanism will be held out o faiVn-unt1l the predetermined thickness of utoiclk:v is again collected uponro In order t at dthe Vstoclr vmuy be properly und evenly cut by theradial movement of roll 46 is s0 arranged that hery frms'en abutment orcutting or supporting the materiel against the outward thrust oftheknife as the knife is forced throu h the material. This roll\ itsperi `may be cylindrical in form and may have its axisztrrnnged'parallelA to the axis of the collecting roll in which casetheA knife will act to sever the `'stock simultaneously throughout thelength 'of the cylinder collccted on the roll. It is preferred, however,to so arrange and 4shiipe the abutment roll that the knife und r'ollwillen-act to secure n progressive cuttin since this insures a moreAeven and uni' crm cut and requires less powersi operating the knife.Thisfeonstruction and arrangement constitutes one of the features oftheinvention. In the construction shown the abutment roll 46 isF arrangedwith its axis inclined Vsomewhat to roll und the pegitudinully of theroll so that it will engage Athe edge of the knife progressively whenthe knife is in its rejected position. The roll 46 is journalcd) inbearings li? carried by yokes 48 which ,are Ypivotully mounted oncollecting roll. The outer ends of the yokes 48 are connected withsupporting rods 49, the length of'which may be adjusted by turn buckles.50' to vary the inclination of the roll or to `bring it to the properheight with relation to the collecting roll. v'The roll is preferablydriven from the felt roll 1 by n. belt 51.

. parte v' thelit the cam After the cylinder Vof'sto-k collected on theroll 3 has beenscvered by thegcttel binde (l, the sheet of stock thusformed lis stripped from the roll hy u stripper or de# fleeting platte:'52, The plate` 52 is carried by arms 53 which are udjnstnbly connectedwith supporting nrnls l-l secured to u rock Y A shaft 55. T he rockshaft 55 is 'mounted brackets 56 secured to the bearing blocks 4 so thatthe stripper )late rilicsnnfl `falls with the collecting rol Thestrpperplute is nornmlly held in u raised' orinuct'ive pol, sition by alatch bolt S which underlies theA front end of nn firm secured to therock shaft 55, (Fig. 1). The latch `bolt ,Wis 30 connected by n link 59with the upperfend of n4 lever (il). the lowerend of which arranged tobe engaged and zcpernteldbyJ the block (il to which the lowerend Vof theknife actusiting lever is connected. lVhen 35 the lever 15 is rocked toactuate the knife, the lever 60 is operated against the tension, of uspring 62V to, retract "the bulto?. This puts t e condition ofpermissiveoperation. tvthais time the slit formed Vinig() the stock inthe collecting roll is not inept. siticn to receive the ed of the ,strilzvper2i plate anxjhe plate should therefore be retained i fits upperEosition unt-ilthis slit comes underuthe'edge of the pleteV und slficuld95 then be. loweredto allowttliered the,` plate to ass through the slitan engage the perip ery ofthe colleetingfcll. Mecha` nisln is,therefore, provided for thus controlling` and timing the enga ment ofthe10o stripper platewith the ro Y. In the construction shdwn thismechpnism comprises a timing cern 63 secured t the collector-,roll shaftund' arranged to nder-lie u roll 642 which is mounted upon 'en erm 65secured 105 to the shaft 55 which'earries the stripper plete. VVhenthepinl 5T is retracted to rei. lense the stripper lute, the rolLGlrides.,A on the cam 63 untilJ the end 66 of the com; y passes frolm undr the roll and lelllwtthe. 11o stri per p atei oen' gement wit` t.colllectillg roll. 'The cnmgils Shcped'to lower `the stripper plateasthe split formed in the, y stock by the knife comes into register withthe edge .of the plate. per plate has been loweredv it should remain inlowered position until the collecting. *i rolllhas made a completerevolutionfso as to completely stri the sheet ofV stockfrom the roll andshenl Ythen be raised into active A position to fellow the fresh stockto celectl. uonthe rollin After the roll 64 has passed' o the end 'cfhecemrthe cern 63' should therefore heV rendered 1inactive until thecollecting eylindcrhas made e cornY lete 126 revolution and theflatch"in 57 Yhas en released I -eedytwsupport estripper-plnte 'Y when 1t isagain raised. For thus rendering the c sqnactive and then resetting thewilly uct when the After the strip 115` stripper plate 1s again'released, the following mechanism is provided. The roll 64 is carried byaetud 67 mounted to slide in the end-of the arm G5. A tin er 68 pro-l 6jects downward from the stud I 7 into osition to engage the cams (il)and 70. l hen the roll 64 passes off the end 66 ot the cam G3, thetingcrGS is brought into osition to be acted upon by the cam 69. cf'orethe cam G3 comes into position to en a e the r'oll- 4, the can: 69acting on the e t side of the linger o8 shifts the roll toward the leftso tha it is ont of the path of the cam 63. This movement of the rollbrings it into the path of s cam 71. The cam 1 is so arranged that itwill lift the roll 64 and arm 65 as the rotation of the collecting rollis completed. Meanwhile the knife actuat ing lever has been returned tonormal csition and thc latch boit 57 has bccnrecased so that it snaps inunder the end of the arm 58 alien the cam 71 rocks the shaft 55 andraises the stripper plate. After the cam 71 has lifted the stripperplate,4the cam V70 engages the right. side of the linger 68 and shiftsthe roll 64 into positionabove the timing cam 63 so that the engagementof the stripper plate will bev plroperly timed when itis next releasedby t e Withdrawal of the bolt 57. y

In order that the stock may pass freely over the stripper plate withoutinjury to the face of the stock or danger nf the stock adhering or.sticking to the plate, means are provided for blowing a series of jetsor ribbon of air between the surface of the plate and the stock. t Asshown, the stripper plate is hollow `to form an air chamber.v 2 which is.connected through a pipe 73 and valve 74 with a source of com ressedair. A series ofeholes 75 are fumier in the front face of the plate nearits lower edge and are prefer'- ably inclined so that the air passing trough them is directed obli uely toward the lower edge of the plate. 'liis air blast effectively prevents adhesion ofi-he stock to the` surfaceof the stripper plate and is also directed against' the line of cleavagebetween 'the stock and the periphery of the collectin roll so that thestock is stripped cleanly an uniformly from the roll. Y A

The valve 74 which' controls the supplg of air to the stripper plate isnormal y eld closed by a spring` 76 acting on the valve rod 77'. Thevalveis opened to supply air in the chamber within the stripper platewhen the knife actuating mechanism 1s thrown into o eration and isreleased to cnt oil the supp y when the stri per plate is raised by acam slide 78 undery' stem 77. The 'cam sli e 78 is connected to the link79 with the upper end of the lever Y60. YWhen the lever 60 is actuatedto withanw am latch mais? the .am slide 'rs a operated to open the valve74. When the` ,comlnnatiom a vertical] moving collecting the end of thevalve,

latch bolt 57 snaps undr the arm 58 as the stripper plate is raised thecam slide is returned to normal position thus closing the valve 74. Adelector roll S0 may be mounted above the stripper plate 72 to direct.'the sh'eet stripped from the collecting roll toward the rear of themachine. T he sheet stripped from the collecting roll is turned over asit is delivered by the stripper plate and` roll 80 so that the surfacethat. is next to the collecting roll is uppermost as the sheet comesfrom thc machine. A delivering table or conveyor may be provided forreceiving the sheet as. it comes from the machine. V

While it is preferred to employ the specific construction andarrangement of the parts shown and described,r it will be underlstoodthat this construction and arrangement is not essential to the broaderfeaturesv of the invention and ma be varied or moditied withoutdeparting t erefroxn.

Having explained the nature and object` of the invention, what isclaimed ist-- 1. A leatherboard machine, having, in combination, acollecting roll, a knife within the roll, mechanism for actuating theknife, 'and a roll arranged with its axis at an inclination to the axisof the collectin rolll and having a longitudinally concav periphery forproressvely coperating with the 'edge of the nite in severing the stock,substantially as described.

2. A lcntlicrboard machine, having, in

roll, a felt roll on whic the collecting roll rests, a knife mounted inthe collecting roll,

un abut-ment roll against which the knife cuts, and mechanism forprojecting and retracting the knife, substantially as described.

3. A leatherboard machine, havin in combination, a collectio roll, a knio for severing :the stock on tio roll, a stri per late, and means fordirecting a blaat o air tween the plate and stock, substantially asdescribed. y

4. A leatherboard machine having, in combination, s collecting roll, astripper. plate, and means fordlrecting a blast o air over the surfaceof the plate toward its aotive edge, substantially s described.

5. A Leatherhead` machine, having, in combination, aeollejetng :oligoknife mounted in the roll. mechanism for astanti the knife, a stripperpistoia cam on ther' for timing the stripper pla devices foi` renderingthc cam inactive a r itlms thrown the stripper plate into-ol'igrntioxrland means for throwing the stripperiplate out of operation and forresetting said devices after the collecting roll has com leted a singlerevolution, substantially as escrihed.

A leathertloard machine, having, in combination, a collecting roll, aknife monnt- -the roll for returning: the stripper plate to scribed.

, elined todrect the air toward the vloiver combination, a felt roll, a`collecting roll ed within the collecting roll, mechanism for actuatingrthe knife controlled by the thickness of material collected on the roll,means for holding the stripper plate away from the roll which arerendered inactive by the knife actuating mechanism, a'timing cam on theroll for controlling the stripper plate when the holdingr devices are',rendered inactive, devices for rendering the timing cam inactive afterit is operated tomove the stripper plate toward the rotl` and cams onnormally position and res-ct said devices after the roll bas made asingle revolution, substantially as described. 4

7. A leatherlioard machine, having, in

combination, a collecting roll, means 'for severing the stock on theroll, a stripper. plate for stripping the stock from the roll, a series.of holes alon" the st ripper plate near itsV active edge, an( means forblowingr air through said holes, substantially as de- A leatherlioaidmachine, having, in combination,` a collecting roll, means for severingthe stock collected on theroll, a stripper plate for strippingr thestock from the roll, au air chamber at the rear of the late, and holesleading from the air chainerto the snrfaceot' the plate which are inedgeof the plate. substantially as described.

9. A leather-hoard machine, having, in combination, a felt roll, acollecting roll resting on the felt roll, a knife mounted within thecollecting roll, mechanism for actuating the knife comprising a clutch,a latch for holding the clutch out of operation, and devieesbetivecn thecollecting roll and latch for actuating the latch, substantially asdescribed.

10. A leathcrboard machine, having, in

resting on the felt roll, a k'nife mounted within the collecting roll,mechanism for aetuating: the knife driven from theicollecting rollincluding a clntch,a latch for holding the clutch out, of action, anddevices between the latch and collectio roll for withdraw, ing the latchthrough te vertical n'iovement of the roll, substantiaily as described.

ll. A leatherboaral,,machine/having, ju, mmbinattion, ac'ollecting roll,a'kiiife 'for severing the stock on the collecting:` roll. a stripperand mech. :iism for releasing 4the` stripper, and separa.e mechanism fortiming the operation of the stripper, substantially as descrilied.

l2. A lcathcrboard machine hai ma; in .':ombinatiom a collecting roll, aknifet'oe' severing the stock on the roll, a clutch tor throwing theknife into and ont of operation controlled hy the thickness of thematerial the stripper ill i ed with the clutch controlling mechanism onthe collecting mit, a stripper for stripping the stock from the rollafter it is cnt, i

13.' a vitamin.la` mman@ having, in

combination, a collecting roll, a knife for Severin the stock on the thethickness, stripper, a clutch for t'hrowin theknife into operation andfor putting tie stripper4 in condi-tion of rmissive operation, and a,timing device or controlling the time of the operation of thestripper,'substantially as described.V Y

14 A 4leatherboard machine having, in combination, aeolleeting roll, aknife cop- 'erati'ng'with the roll, means for operating the knifecontrolled by the thickness of the material vcollected on the rollincluding a clutch, a stripper, a detent for supporting it; ont ofoperative position, connections between the detent andthe knife forreleasing the stripper, and a cam causing thestripper to engage the rolla't th'eproper time to strip the severed stock therefrom,substantiallyas' described.`

V15. A leatlierboardimachine having, in combination, a collectingr roll,a knifescotpel'atingr'wit'h the collectin'gtroll, mechanism for"actuatngtlie kn'ife vfrom the collecting roll controlled by' of thematerial thereon, n.45

`roll incllidii'ig a clutch and clutch operating!l i mechanismcontrolled h v th e thickness of the material collected on the roll, astripper, means fm1 holding the, stripper in inoperative positionconnected with the clutch controlling mechanism and released by theknife, a cam operatively connected with the stripper causing thecollectingl roll at. the proper time after the severing cut is made toengage the stock on the rollsatfthe nut and to remain in contactstripper to engage tlie` with the roll for a complete revolutionthereof, acting thereafter to lift, the Stripper ont of contact; with thecollecting.,y roll, substan tially as described.

16. A leatherhoard machine having. in

comliinatioina eollectingroll, a` knife eafpl erationwitli lthecollecting roll, mechanism for actuating the knife from the. collecting'roll int-hidinga clutch and clutch operating mechanism controlled by thethickness of the material Gillet-ted on the roll, an abutment rollagainst ,which the knife operates, the knife actuating v its connectionwith the collecting roll to make itsscvering cut whenit is opposite theabutment roll, a stripper, rmeans for holding imperativi positionconnectanfl released by the knife, a cani operatively eomuwted ii-ithti'ie stripper causing the tripprr to engag'the,rullectingJ-oll at `theproper time after -the severing cut is madel mechanism hein" timed-,bv`

lao

to engage the stock on the roll at the out and to remain in contact withthe roll for a complete revolution thereof, acting thereafter to liftthe stripper out of Contact with the collecting roll, substantially asdescribed.

17. A leatherboard machine having, in combination, a collectingroll,.means for sev- @ring the Stock 0n the roll, a stripper plate forstripging the stock -from the roll, con` nections etween the stripperand the severing means for putting the stripper in condition ofpermissive operation and means for determinin the timing of t e stripver actin to hol it in contact with the co lecting ro l darin a completerotation thereof for thereafter iftng it therefrom and restoring it tothe position of inoperativeness, substantially as described.

18. A leatherboard machine having, in combination, a hollow cylindricalcollecting roll having a longitudinal opening therein, a stock severingknife, and mechanism for operatin it located in said openin andadaptedto inserted and removed t erethrough, substantially as described.

19. A leatherboard machine having,- in combination, a collecting roll, aknife within the roll, mechanism for actuating the knife', an abutmentroll a inst which the knife cuts located alongsi e of the collectingroll,

andV mechanism controlled by the thickness of the material collected onthe collecting roll for throwing the knife into o eration, said knifeand abutment roll having provision by virtue of which the knife iscaused to cut acro the roll progressively in severing the stock,substantially as described.

20. A leatherboard machine havin in combination, a collecting roll, aknife within the roll, mechanism for actuating the knife, and anabutment roll arranged with its axis inclined to the axis of thecollecting roll so as. thereby to cause the knife to cut progressivelyacross the material in severing the stock, substantially as described.

21. A leatherboard machine having, in combination, a collecting roll, aknife mounted in the collecting roll, a stripper plate for stripping thesevered stock from the collecting roll, and connectedmeehansm operatingautomatically upon the collection of a predetermned thickness of stockon the collecting roll to actuate the knife to sev.1 thr stock thereonand to cause the stripperflalafq to engagerfthe collectingroll and strie stock there m,

substantiall as descri ed.

ROSWldrLL A. LANCEY. Witnesses A:

N. D. MoPnalL,

Gnonor. E. Srannms.

